20542781960

素因数分解:

$2^3\times 5^1\times {\mathrm{513569549}}^1$

素因数の和:513569560

約数の個数: 16

約数和(自身を含む): 46221259500

約数和(自身を除く): 25678477540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 513569549, 1027139098, 2054278196, 2567847745, 4108556392, 5135695490, 10271390980, 20542781960]

約数ペア:

[(1, 20542781960), (2, 10271390980), (4, 5135695490), (5, 4108556392), (8, 2567847745), (10, 2054278196), (20, 1027139098), (40, 513569549)]